Question 1

Which of the following correctly describes the structure of DNA?

Accepted Answer

DNA is a double helix composed of nucleotides.

Answer

DNA is a triple helix formed by proteins.

Answer

DNA has no specific structure.

Answer

DNA is a single strand made of amino acids.

Question 2

What are the building blocks of DNA?

Accepted Answer

Nucleotides

Answer

Monosaccharides

Answer

Amino acids

Answer

Fatty acids

Question 3

What is the function of the nitrogenous bases in DNA?

Accepted Answer

To store genetic information

Answer

To transport nutrients

Answer

To provide structural support

Answer

To form energy molecules

Question 4

Which of the following pairs of nitrogenous bases are complementary in DNA?

Accepted Answer

Adenine and Thymine

Answer

Adenine and Cytosine

Answer

Guanine and Cytosine

Answer

Thymine and Uracil

Question 5

What role do the hydrogen bonds play in the structure of DNA?

Accepted Answer

They stabilize the double helix structure.

Answer

They bind the DNA to proteins.

Answer

They provide energy for replication.

Answer

They allow the DNA to repair itself.

Question 6

What is the significance of the antiparallel nature of DNA strands?

Accepted Answer

It allows for proper base pairing during replication.

Answer

It helps in the synthesis of proteins.

Answer

It increases the stability of the double helix.

Answer

It allows for the attachment of RNA.

Question 7

Which scientist is credited with the discovery of the double helix structure of DNA?

Accepted Answer

James Watson and Francis Crick

Answer

Charles Darwin

Answer

Lynn Margulis

Answer

Gregor Mendel

Question 8

What is the primary function of DNA?

Accepted Answer

To store and transmit genetic information

Answer

To provide energy for cellular processes

Answer

To catalyze biochemical reactions

Answer

To synthesize proteins directly

Question 9

What are the four nitrogenous bases found in DNA?

Accepted Answer

Adenine, Thymine, Cytosine, Guanine

Answer

Guanine, Cytosine, Ribose, Deoxyribose

Answer

Amino acids, Fatty acids, Nucleotides

Answer

Adenine, Thymine, Cytosine, Uracil

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